Dielectric elastomer actuators (DEAs) can be optimized by modifying the dielectric or mechanical properties
of the electroactive polymer. In this work both properties were improved simultaneously by a simple process,
the one-step film formation. The silicone elastomer network contains polydimethylsiloxane (PDMS) chains, as
well as crosslinker and grafted molecular dipoles in varying amounts. This leads to films, which are homogenous
down to the molecular level. Films with higher permittivity and reduced stiffness were obtained. As matrix
two PDMS-materials with different molar masses, leading to other network chain lengths, were compared. This
directly influences the network density and thus the mechanical properties. A higher electrical field response for
long chain matrix materials was found. The actuation sensitivities for both materials were enhanced by 6.3 and
4.6 times for the short and long chain matrix material, respectively.
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